Strengthening and locking



(No Model.)

G. H. MAETZEL. STRENGTHENING ANDLOGKING APPLIANGE FOR'DOORS. No. 396,584.

Patented Jan. 22, 1889..

NITED ST TES GEORGE H. MAETZEL, OF COLUMBUS, OHIO.

STRENGTHENING AND LOCKING APPLIANCE FOR DOORS.

SPECIFICATION forming part of Letters Patent No. 396,584, dated January 22, 1889.

Application filed May 28, 1883. fierial No. 275,341. (No model.)

lumbus, in the county of Franklin and State of Ohio, have invented new and useful Improvements in Strengthening and Locking Appliances for Doors, of which the following is a full and exact description, reference being had to the accompanying drawings, making partof this specification.

' This invention relates to improvements in looks, and more especially to locks for the celldoors of jails and like structures; and it has for its objects to form a secure locking attachment which is mounted in bearings set away from the wall of the cell, so that the occupant is prevented from tampering with the fastening unobserved; to provide a means for preventing the locks being released during the absence of the person in charge without detection, and to provide a hanging for the doors which is at once strong, and has the hinges so placed as to prevent access to them unobserved.

In the drawings, Figure 1 is a plan view of the invention, showing the arrangement of parts and a mechanism for opening and closing the doors separately or jointly, which I use by preference. Fig. 2 is a front elevation of the door and of the locking attachment. Fig. 3 is a horizontal section through a door of a cell, in which is shown the relative arrangement of the parts when the door is locked. Fig. at shows a means for securing the locking attachment from being tampered with during the absence of the keeper.

The letters A designate the cells, which, in the majority of cases, are constructed of stone walls, and are provided with the doorways A. The hinges for the doors as heretofore constructed have been set in the stone at the side of the doorway by the usual method of boring holes, set-ting the hinges in place, and pouring melted metal to retain them in place. The door is mounted upon these hinges and locked, when closed, by various known methods. Some of the difficulties attending this mounting of the doors are that in case of a defective pouring of the metal the hinge is easily forced from its hold in the wall by pressure applied from within, and that the expense of the manipulation incident to this method of hanging the hinges is quite expensive. It is to obviate these diliiculties that I have provided the method for hanging the door shown in the drawings.

At the hinge side of the door B, which is constructed of iron and braced to withstand a great amount of strain, I secure, by riveting, the angle-bar B, extending up the whole length of the door. The remaining flange of the angle-bar is riveted tothe square bar B which is mounted at the lower end in the socket-bearing B and passed through the bracket-bearing B near the top of the cell. The socket-bearing is bolted to the floor away from the wall of the cell, and the bracket to the side of the cell, as shown in the drawings.

The upper or bracket bearing is generally placed out of the reach of the occupant of the cell, and in some cases is passed over the top and then screwed down. This form of hinge is very strong and the fastenings are out of reach of the occupant of the cell, while at the same time forming a very steady hinge. The devices for operating the doors to open and close them are secured to the top of the hinge-bar and rest over the cell. in the space between the upper and lower tiers of cells. The lever O is set on a square shoulder at the top of the bar B and is provided at the end removed from the said bar with the slot 0. Operating in the slot is a pin, which is upset from the sliding block D. The sliding block D is mounted in any suitable manner in the guide-bars D, which are bolted in position, as shown, and are rigidly attached to the endless cable E, which is passed around the pulleys F F. The pulleys F F are mounted in bearings bolted to the top of the cell, as shown, the latter acting as an idler and the former provided on the end of its shaft with the beveled pinion F, by means of which it is rotated. In position to gear with the pinion F are the beveled cogs G and G the former of which is splined on the shaft G, and the latter is mounted loosely to allow the shaft to turn within it. Both of the wheels G and G are provided with a grooved collar, in the groove of which is fitted a yoke end of parallel levers, H. To the rear of the wheel G, and mounted rigidly on the shaft G, is the box G in which is contained the spring G Which tends to force the wheel G into engagement with the pinion F This tendency is counteracted by the operator drawing the string II, which is attached to the end of the levers II, and when drawn in the direction of the operator forces the wheel G out of and the wheel G into engagement with the pinion F If it is desired to hold the parts in this position, a ring upon the end of the string H is placed over ahook assigned to it for that purpose. By this arrangement the keeper can see at a glance which cells are locked and not locked, for this device is also a locking attachment, as will be explained.

,In this position of the pinion F and wheels G and G it is apparent that the shaft G can be rotated without affect-in g the pinion F and pulley F.

I do not claim in this application the abovedescribed attachments broadly, as the purpose for which they are designed may be accomplished by other suitable means; and, further, the same is set forth and claimed in an application filed on this date and bearing the Serial No. 275,3l2.

WVhen the doors are closed as described, they are locked simultaneously for the night or during the absence of the keeper by rotating the shaft I by means of the wheel I in the office. The shaft Iis provided at intervals for each door with a short worm, 1 in position to engage the segment cog-wheel K The segment K is rigidly mounted upon the end of the rod K, which is mounted in a bracketbearing, K and a socket-bearing, K similar to those provided for the bar B the socketbearing K standi ng away from the wall of the cell and bolted to the floor. In this manner any tampering with the socket without detection is prevented, as it is within clear view of any one in the corridor. Down the side of the rod K and edge next to the door is a flange, K, which may be formed integrally with the rod K or separately and riveted to it, as desired. The door B is provided on the opening edge with the T-iron B, which is riveted to it, and the flange of which extends over the jam of the door, passing close to the rod K in closing.

To operate this device, the doors are closed by the attachments for that purpose described above. The operator then turns the wheel I to rotate the shaft I and worms I upon the same. The segments 1' on the rod K being engaged with the said worms, are drawn around, turning that rod in its bearings until the flange K is brought over the flange of the T-iron anyindicatorin the operating-room designating to the operator when this has been accomplished. In this position of the parts the doors are seeurel y locked, as it would require a strain which would buckle the door to rotate the shaft backward through the described gears by means of a pressure applied to the door. As an extra safeguard, however, and as a device which maybe applied to prevent tamperin with the locks by any one unauthorized in the operating-room, I apply a strong hasp, L, which is hinged so as to fall over the end of the shaft Iwhen the wheel I has been removed. It is provided at the point where it comes in contact with the shaft with a square aperture, L, fit ting over the squared end of the shaft I, and with a slot to fit over the staple L This attachment is applied by removing the wheel I from the shaft and dropping the hasp L into place and locking it by means of a padlock or seal, as desired. \V'ith this attachment in place it is impossible to turn the shaft I by any others than those authorized without immediate detection.

\Vhen the locking attachment herein described is applied, the movementcan be transmitted from one shaft to another by any suitable means, one simple form of which is shown in Fig. 1 of drawings for transmitting the movement to the tier on the opposite side of the corridor. This consists in fixing upon the shaftl the beveled cog-wheel M. Geared to this is the beveled cog-wheel N on the shaft 0. The shaft 0 extends across the corridor to the opposite tier of cells, where it is provided with thebeveled cog P, which is in turn geared to the beveled cog Q upon the shaft R. This shaft extends parallel to the shaft I and over the tops of the opposite cells. This shaft is provided in like manner to that of the shaft I with the worm-gears I for engaging the segment-cogs on the locking-bars of the doors. The beveled cog-wheels are all equal, so that the same movement is imparted to both shafts alike by turning the wheel I.

To unlock the cells, the wheel I is reversed until the flange K is thrown back from the flange of the T-iron B, when the doors may be opened by the opening and closing attachments hereinbefore described.

\Vhat I claim is-- 1. In a cell such as described, the combination of a door, an angle-iron riveted to the hinge edge of the door, and a bar rigidly attached to the said angle-iron and mounted in bearings, the lower of which is removed from the wall of the cell and the upper is secured to the wall of the cell at or near the top of the same, substantially as described.

2. In a cell such as described, the combination of a door, an angle-iron rigidly attached to the hinge edge of the door, a bar rigidly attached to the said angle-iron and mounted in bearings, the lower of which is removed from the wall of the cell and the upper is secured to the wall of the cell at or near the top of the same, a flange rigidlyattached to the opening edge of the door and extending over the jamb, and any suitable means for securing the door when closed passing over the said flange, substantially as described.

3. In a cell such as described, the eombi nation of a door, an angle-iron rigidly attached to the hinge edge of the door, and a T-iron rigidly attached to the opening edge,

both irons extending the Whole length of the door, to brace the same, substantially as set forth.

4. In a cell such as described, the combination of a door provided with angle-irons rigidly attached to the opposite edges, a barforming the hinge rigidly attached to one of the said angle-irons and mounted in bearings which are removed from the wall of the cell, a bar similarly mounted in bearings at the opening side of the door and having a flange Vitn esses:

DANIEL KRUMM, A HENRY KROPP. t. 

